Exact same issue. Running 3840 x 2160 on main screen and 1920x1080 on extended second display. Both displays have v. small toolbar icons and screwed up Database/Table Filters input boxes. Auto scaling in use with main screen at 200% and second screen at 100%

Yes, that's a known issue in HeidiSQL. Unfortunately, Delphi XE5's support for high dpi dialogs and forms is horrible. Apart from setting the dpiAware flag per manifest file, which I recently did to prevent Windows from upscaling and blurring, there is not much I can do. The icons cannot be scaled, many input fields do not respond as they should when trying to set their height, etc.

Ads were blocked - no problem. But keep in mind that developing HeidiSQL,
user support and hosting takes time and money. You may want to
send a donation instead.

How bad was the upscaling blur to begin with? If Delphi lacks proper support for high DPI displays, perhaps it's better to just not pretend the app is dpiAware. Not to mention that good old FamFamFam Silk icons come in good old 16x16 px format.

As a personal note, I've been using monitors slighly over the minimum resolution since Windows 98 and I can tell you that programmers in general and GUI library creators in particular hate displays over 72dpi to the bones.

Hi, just gave it a try and it's much better than it was. At least now it's usable :)

To be honest it is blurry as you can see in screenshot which compares both versions (without any post processing). Fonts in menu are good enough, but maybe something could be done with most frustrating part: font in SQL windows and log?

Anyways, since it doesn't break anything for users with standard dpi I'd prefer to stay on this release. Thank you

1920x1080 is not really a desktop size that requires a very high DPI setting. This tends to be an issue with e.g 4K monitors (3840 x 2160) that can have values like 200 or 300 dpi (depending on the actual monitor size).

Hi, I had the same problem (resolution:3200x1800 and scale and layout: 250%.)

In order to fix the issue on 10.1.0;
I changed the style theme to "windows" and as angsar suggested went to Compatability > Change High DPI settings and marked High DPI scaling override to: System (Enhanced).